User Manual for EPEVER Tracer BP Series MPPT Solar Charge Controller

Quick Guide from the Manual

The EPEVER Tracer BP series is an MPPT solar charge controller designed for various battery types, including lead-acid and lithium. Crucial Wiring Sequence: Always connect components in the following order: 1. Battery, 2. PV (Solar Module), 3. Load. When disconnecting, reverse this order. Ensure a fast-acting fuse is installed on the battery positive line within 150mm of the battery.

Product Overview

The controller features an aluminum housing for cooling and is IP68 waterproof. Key components include the temperature sensor, PV input, battery input, load output, and an RS485 communication port. The RS485 port provides a 5VDC/150mA power supply and requires the waterproof cap to be installed when not in use.

Wiring and Installation

Installation must be performed in a non-corrosive, non-flammable environment. Connect the battery first to power the controller, then connect the PV array, and finally the load. Ensure all connections are tight to prevent overheating. The controller includes a load self-test function that turns the load ON for 10 seconds after power-up.

LED Indicators

The controller uses LED indicators to show system status:

• PV Indicator (Green): Solid means normal operation (low voltage/no charging), OFF means no PV voltage (night), Slowly Flashing (1Hz) means charging, Fast Flashing (4Hz) means PV overvoltage.
• Battery Indicator (Green/Orange/Red): Solid Green means normal, Slowly Flashing Green means full charge, Fast Flashing Green means overvoltage. Orange means under voltage. Red means over-discharged. Fast Flashing Red indicates overheating or lithium battery low temperature.
• System Error: If both charging and battery indicators flash simultaneously, there is a system voltage error.

Load Working Modes

The controller supports four load working modes:

1. Manual Mode: Default ON.
2. Light ON/OFF: Automatically turns on/off based on light levels.
3. Light ON + Timer: Turns on based on light levels and runs for a set duration.
4. Real-time Control: Controls load ON/OFF time via a real-time clock.

Note: In Light ON/OFF and Light ON/Timer modes, the load turns on after a 10-minute delay.

Protection Features

The controller includes comprehensive protections: PV over current, PV short circuit, PV reverse polarity, battery reverse polarity, battery over voltage, battery over discharge, battery overheating, lithium battery low temperature, load overload, and load short circuit. In case of load overload or short circuit, the controller attempts to reconnect 5 times with increasing delays.

Troubleshooting

If the charging indicator is off during the day, check PV and battery connections. If there is no LED indicator, measure battery voltage; it must be at least 8.5V to start. If the battery LED flashes red, the battery is overheating; the system will turn off until the temperature drops below 50 degrees Celsius. For load output issues, check for overload or short circuits and restart the controller.

Technical Specifications

The Tracer BP series supports 12V/24V systems (auto-detect for lead-acid, manual for lithium). The input voltage range is 8.5V to 32V. The enclosure is rated IP68. Operating temperature ranges from -40 degrees Celsius to +60 degrees Celsius (or +50 degrees Celsius depending on the model).